They did something similar to 3rd IIRC. Reprinted with a lot of the FAQs and white dwarf updates. Was kinda meh, since 4th came out maybe a year or two later.

Are fliers still a big deal for everyone who has a codex so far? I know that some of the older ones (Wolves in particular) are struggling, but once they get an update I'd be surprised if they still were having issues (or could just take allies ).

I agree that if you disembark before a vehicle moves you should still be allowed to assault. That would instantly make a large number of assault armies viable again, even with First Blood.

In favor of the 25% LoW option. At that point all the super heavies kind of balance out.

Know what I would like to see in there? A line that says "If a unit in a formation would be considered scoring in the primary detachment, it is also scoring in the formation". Thus Broadsides could score in Big Guns for core Tau lists, Chosen could score for Black Legion/Abadon lists, etc. Anyone could still take them, but their "home army" would have distinct benefits.